[1] Tokyo Kyosai Hosp, Dept Rheumatol, Tokyo, Japan
[2] Tokyo Med & Dent Univ, Grad Sch Med & Dent Sci, Dept Rheumatol, Tokyo, Japan
[3] Nagasaki Univ, Grad Sch Biomed Sci, Div Adv Prevent Med Sci, Dept Immunol & Rheumatol, Nagasaki, Japan
[4] Kyoto Univ, Grad Sch Med, Dept Rheumatol & Clin Immunol, Kyoto, Japan
[5] Yokohama City Minato Red Cross Hosp, Dept Rheumatol, Yokohama, Kanagawa, Japan
[6] Tenri Yorozu Hosp, Dept Gen Internal Med, Nara, Japan
[7] Fukushima Med Univ, Ctr Innovat Res Commun & Clin Excellence, Fukushima, Japan